No partition table on /dev/sda

Got the ‘mount failed’ message in dashboard. Read through this thread

Seems like e2fsck worked after much effort, however, I don’t have /dev/sda1. No partition to repair.

There is a partition table on sdb which appears to be mounted to /mnt/DroboFS1. Not sure what this is, but there is no data there.

I can create a partition table on sda with parted, but i’m not sure what the start and end values are. /dev/sdb seems to be partitioned as ext3 and looks like it’s using the whole disk pack.

Not sure how to start repairing the partition table. I thought that perhaps I could mirror the settings of sdb, but that seems odd to me. Thought I’d check here and see if anyone has had a similar issue.